Andrew Robertson (Hull City)

Twenty-two-year-old Hull left-back Robertson has been mooted as the Reds’ backup plan if they fail to sign Chilwell, with the Telegraph reporting Klopp’s interest in the Scotland international.

In many ways, Robertson would be a more suitable addition to Chilwell, with his balance of defensive and attacking quality boosted by his experience of first-team football, and he could likely challenge Moreno from the off.

German international Jonas Hector may be available (Picture: Getty Images)

Jonas Hector (Cologne)

Featuring regularly for Germany at this summer’s European Championship, Cologne defender Hector was widely rumoured to be on Klopp’s list of targets ahead of the summer.

A defensive-minded left-back with a reported £6.5 million release clause, Hector would provide the perfect tonic to the rampaging Moreno.

Could Lucas Digne be the man for the Reds? (Picture: Getty Images)

Lucas Digne (PSG)

French left-back Digne spent the 2015/16 campaign on loan with Serie A outfit Roma, with Luciano Spalletti said to be keen to secure his services on a permanent basis.

A well-rounded option who, at 22, has significant experience of top-level football, Digne would be a great addition for the Reds if they are able to beat Roma to his signature.

Marcos Alonso has plenty of admirers (Picture: Getty Images)

Marcos Alonso (Fiorentina)

Former Sunderland loanee Alonso has enhanced his reputation since returning to Fiorentina in the summer of 2014, and is now one of Europe’s most dependable left-backs.

At his best driving forward from the left side, Alonso is also a strong defensive presence, and would likely relish the chance to compete with his compatriot, Moreno.

Mattia De Sciglio did his reputation no harm at Euro 2016 (Picture: Getty Images)

Mattia De Sciglio (AC Milan)

Italy international star De Sciglio made four appearances for Antonio Conte’s side at Euro 2016, providing the Azzurri with width on the left flank.

Spuriously linked with a move to Merseyside during the tournament, the 23-year-old would provide experience cover at both left and right-back if he were to make the move from AC Milan.